# A006088 (b-file synthesized from sequence entry)
0 1
1 4
2 24
3 240
4 4320
5 146880
6 9694080
7 1260230400
8 325139443200
9 167121673804800
10 171466837323724800
11 351507016513635840000
12 1440475753672879672320000
13 11803258325595576034990080000
14 193408190923209108909347450880000